下面列出了java.io.PrintWriter#printf ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private void printUsageMessage(UsageMessageSpec usageMessage, PrintWriter pw, String indent) {
pw.printf("%sUsageMessageSpec:%n", indent);
indent += " ";
pw.printf("%swidth: %s%n", indent, usageMessage.width());
pw.printf("%sabbreviateSynopsis: %s%n", indent, usageMessage.abbreviateSynopsis());
pw.printf("%shidden: %s%n", indent, usageMessage.hidden());
pw.printf("%sshowDefaultValues: %s%n", indent, usageMessage.showDefaultValues());
pw.printf("%ssortOptions: %s%n", indent, usageMessage.sortOptions());
pw.printf("%srequiredOptionMarker: '%s'%n", indent, usageMessage.requiredOptionMarker());
pw.printf("%sheaderHeading: '%s'%n", indent, usageMessage.headerHeading());
pw.printf("%sheader: %s%n", indent, Arrays.toString(usageMessage.header()));
pw.printf("%ssynopsisHeading: '%s'%n", indent, usageMessage.synopsisHeading());
pw.printf("%scustomSynopsis: %s%n", indent, Arrays.toString(usageMessage.customSynopsis()));
pw.printf("%sdescriptionHeading: '%s'%n", indent, usageMessage.descriptionHeading());
pw.printf("%sdescription: %s%n", indent, Arrays.toString(usageMessage.description()));
pw.printf("%sparameterListHeading: '%s'%n", indent, usageMessage.parameterListHeading());
pw.printf("%soptionListHeading: '%s'%n", indent, usageMessage.optionListHeading());
pw.printf("%scommandListHeading: '%s'%n", indent, usageMessage.commandListHeading());
pw.printf("%sfooterHeading: '%s'%n", indent, usageMessage.footerHeading());
pw.printf("%sfooter: %s%n", indent, Arrays.toString(usageMessage.footer()));
}
private void moveFacades(Collection<String> facades, String srcPlacement, String destPlacement,
Optional<Integer> numShards, PrintWriter out, MoveType moveType) {
if (!facades.isEmpty() && (srcPlacement == null || destPlacement == null)) {
out.println("The 'src' and 'dest' placement query parameters are required when moving facades.");
return;
}
for (String facade : facades) {
out.printf("Moving facade %s to placement %s...%n", facade, destPlacement);
try {
_tableDao.moveFacade(facade, srcPlacement, destPlacement, numShards, new AuditBuilder().build(), moveType);
} catch (Exception e) {
out.printf("ERROR moving facade %s to placement %s: ", facade, destPlacement);
e.printStackTrace(out);
}
}
}
/**
* Print the administration form for the MemBasedLoadManager
*/
private void showAdminFormMemBasedLoadMgr(PrintWriter out,
boolean advancedView) {
if (!(loadMgr instanceof MemBasedLoadManager)) {
return;
}
out.print("<h2>Memory Based Scheduling</h2>\n");
MemBasedLoadManager memLoadMgr = (MemBasedLoadManager)loadMgr;
Collection<String> possibleThresholds =
Arrays.asList(("0,1,2,3,4,5,6,7,8,9,10,1000").split(","));
long reservedMemGB =
(long)(memLoadMgr.getReservedPhysicalMemoryOnTT() / 1024D + 0.5);
out.printf("<p>Reserve %s GB memory on one node.",
generateSelect(possibleThresholds, "" + reservedMemGB,
"/fairscheduler?setTtThreshold=<CHOICE>" +
(advancedView ? "&advanced" : "")));
}
private static void printUsage()
{
PrintWriter pw = new PrintWriter(System.out, true);
String usageStr =
"Usage:\n"
+ " ListJrpipRequest -f inputFileName [OPTIONS]\n\n"
+ " Options:\n"
+ " -id number [,number]\n"
+ " -method name\n"
+ " -between start, end [dates formatted as yyyy-MM-dd HH:mm:ss]\n"
+ " -argument value\n\n"
+ " Example:\n"
+ " ListJrpipRequest -f inputFile.log\n"
+ " ListJrpipRequest -f inputFile.log -id 11,23 -method myMethod -between 2011-05-30 13:00:00, 2011-05-30 13:05:00 -argument GSCO\n"
+ "\n\n\n";
pw.printf(usageStr);
}
/**
* Dump the message in human readable format. This should only be used for
* debugging and tracing, inefficient in handling large messages.
**/
public void dump(Appendable out)
{
try {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
pw.printf("--------------------------------------\n");
for (ZFrame frame : frames) {
pw.printf("[%03d] %s\n", frame.getData().length, frame.toString());
}
out.append(sw.getBuffer());
sw.close();
}
catch (IOException e) {
throw new RuntimeException("Message dump exception " + super.toString(), e);
}
}
private static void generate(String className) throws Exception {
System.out.println("Generating " + className + ".java");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bos);
for (Serializable s : objects)
oos.writeObject(s);
oos.close();
byte[] bytes = bos.toByteArray();
PrintWriter pw = new PrintWriter(className + ".java");
pw.printf(
"// Generated by: MBeanInfoInteropTest generate %s\n" +
"import java.io.*;\n" +
"public class %s {\n" +
"public static final byte[] BYTES = {\n", className, className);
for (int i = 0; i < bytes.length; i++) {
byte b = bytes[i];
pw.printf("%d,", b);
if (i % 16 == 15)
pw.printf("\n");
}
pw.printf("\n");
pw.printf(
"};\n" +
"}\n");
pw.close();
System.out.println("...done");
}
private static void writeDisambiguationId(PrintWriter aOut, TsvDocument aDoc, AnnotationFS aFS)
{
Integer disambiguationId = aDoc.getDisambiguationId(aFS);
if (disambiguationId != null) {
aOut.printf("[%d]", disambiguationId);
}
}
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException, ServletException {
Query q =
new Query("Widget")
.setFilter(
CompositeFilterOperator.and(
new FilterPredicate("x", FilterOperator.EQUAL, 1),
new FilterPredicate("y", FilterOperator.EQUAL, "red")))
.addSort("date", Query.SortDirection.ASCENDING);
List<Entity> results = datastore.prepare(q).asList(FetchOptions.Builder.withDefaults());
PrintWriter out = resp.getWriter();
out.printf("Got %d widgets.\n", results.size());
}
public int handleParseException(ParameterException ex, String[] args) {
CommandLine cmd = ex.getCommandLine();
PrintWriter writer = cmd.getErr();
writer.println(ex.getMessage());
UnmatchedArgumentException.printSuggestions(ex, writer);
writer.print(cmd.getHelp().fullSynopsis()); // since 4.1
CommandSpec spec = cmd.getCommandSpec();
writer.printf("Try '%s --help' for more information.%n", spec.qualifiedName());
return cmd.getExitCodeExceptionMapper() != null
? cmd.getExitCodeExceptionMapper().getExitCode(ex)
: spec.exitCodeOnInvalidInput();
}
/**
* Write the clustering details into a file.
*
* @param file
* the file to where the clustering details are to be written.
*/
public final void printClusteringDetails(File file) throws AdeException {
final PrintWriter out = FileUtils.openPrintWriterToFile(file, true);
out.printf("%s%n", m_clusteringDetails);
out.close();
}
/**
* Only retain top occurrence words of a review.
* @param inputfileDir
* @param dataset
* @param maxWords The number of (top occurrence) words in the word dictionary.
* @throws IOException
* @throws LangDetectException
*/
public void FilterVotesReviewsByWords(String inputfileDir, String dataset, int maxWords)
throws IOException {
String inputfile = inputfileDir + dataset + ".votes";
String outputfile = inputfileDir + dataset + "_w" + maxWords/1000 + "k.votes";
reader = new BufferedReader(new InputStreamReader(new FileInputStream(inputfile)));
System.out.print("\nFiltering reviews by words: " + dataset);
// Step 1: Build word dictionary.
HashMap<String, Integer> map_word_id = new HashMap<String, Integer>();
this.buildWordsDictionary(inputfile, map_word_id, maxWords);
// Step 2: Write the filtered file.
PrintWriter writer = new PrintWriter (new FileOutputStream(outputfile));
String line;
while ((line = reader.readLine()) != null) {
String[] arr = line.split(" ");
String filtered_review_text = "";
int wordcount = 0;
for (int i = 5; i < arr.length; i++) {
String word = arr[i];
if (map_word_id.containsKey(word)) {
wordcount ++;
filtered_review_text = filtered_review_text + word + " ";
}
}
writer.printf("%s %s %s %s %d %s\n",
arr[0], arr[1], arr[2], arr[3], wordcount, filtered_review_text);
}
System.out.println("\nWrite the filtered file in: " + outputfile);
writer.close();
reader.close();
}
protected void generateDecl(PrintWriter pw) {
generateWarningSuppression(pw);
pw.print(toJoinedString(this.accessFlags, " ", "", " "));
pw.printf("%s %s(", returnType, name);
pw.print(toJoinedString(parameters, ","));
pw.print(")");
}
private static void writePositional(PrintWriter pw, PositionalParamSpec positional, IParameterRenderer parameterRenderer, IParamLabelRenderer paramLabelRenderer) {
pw.println();
Text[][] rows = parameterRenderer.render(positional, paramLabelRenderer, COLOR_SCHEME);
pw.printf("%s::%n", join(", ", rows[0][1], rows[0][3]));
pw.printf(" %s%n", rows[0][4]);
for (int i = 1; i < rows.length; i++) {
pw.printf("+%n%s%n", rows[i][4]);
}
}
public void write(PrintWriter out) throws Exception {
out.printf("[Predictor: %s]\n", this.getClass().getCanonicalName());
out.println("Length: " + trees.size());
for (RTree rt : trees) {
rt.write(out);
out.println();
}
}
@Override
public void execute(ImmutableMultimap<String, String> parameters, PrintWriter out) throws Exception {
String fetchValue = Iterables.getFirst(parameters.get("fetchSize"), "-1");
String batchFetchValue = Iterables.getFirst(parameters.get("batchFetchSize"), "-1");
String prefetchLimitValue = Iterables.getFirst(parameters.get("prefetchLimit"), "-1");
String batchPrefetchLimitValue = Iterables.getFirst(parameters.get("batchPrefetchLimit"), "-1");
Integer fetchSize = parseInt(fetchValue, "fetch size", out);
Integer batchFetchSize = parseInt(batchFetchValue, "batch fetch size", out);
Integer prefetchLimit = parseInt(prefetchLimitValue, "prefetch limit", out);
Integer batchPrefetchLimit = parseInt(batchPrefetchLimitValue, "batch prefetch limit", out);
if (fetchSize == null || batchFetchSize == null || prefetchLimit == null || batchPrefetchLimit == null) {
return;
}
// Update fetch sizes and prefetch limits if needed
if (fetchSize > 0 || prefetchLimit >= 0) {
if (fetchSize > 0) {
_cqlDriverConfiguration.setSingleRowFetchSize(fetchSize);
}
if (prefetchLimit >= 0) {
_cqlDriverConfiguration.setSingleRowPrefetchLimit(prefetchLimit);
}
}
if (batchFetchSize > 0 || batchPrefetchLimit >= 0) {
if (batchFetchSize > 0) {
_cqlDriverConfiguration.setMultiRowFetchSize(batchFetchSize);
}
if (batchPrefetchLimit >= 0) {
_cqlDriverConfiguration.setMultiRowPrefetchLimit(batchPrefetchLimit);
}
}
out.printf("Use CQL for multi-gets/scans = %s/%s. To change these values use the \"sor-cql-driver\" task.%n%n",
_useCqlForMultiGets.get(), _useCqlForScans.get());
out.printf("FETCH_SIZE : %d | BATCH_FETCH_SIZE: %d | PREFETCH_LIMIT=%d | BATCH_PREFETCH_LIMIT=%d%n",
_cqlDriverConfiguration.getSingleRowFetchSize(), _cqlDriverConfiguration.getMultiRowFetchSize(),
_cqlDriverConfiguration.getSingleRowPrefetchLimit(), _cqlDriverConfiguration.getMultiRowPrefetchLimit());
}
public void generate(PrintWriter pw) {
generateDecl(pw);
pw.printf(" { %s }", this.body);
}
/**
* Dumps all of the threads' current information to an output stream.
*
* @param out an output stream
*/
public void dump(OutputStream out) {
final ThreadInfo[] threads = this.threadMXBean.dumpAllThreads(true, true);
final PrintWriter writer = new PrintWriter(new OutputStreamWriter(out, UTF_8));
for (int ti = threads.length - 1; ti >= 0; ti--) {
final ThreadInfo t = threads[ti];
writer.printf("%s id=%d state=%s",
t.getThreadName(),
t.getThreadId(),
t.getThreadState());
final LockInfo lock = t.getLockInfo();
if (lock != null && t.getThreadState() != Thread.State.BLOCKED) {
writer.printf("%n - waiting on <0x%08x> (a %s)",
lock.getIdentityHashCode(),
lock.getClassName());
writer.printf("%n - locked <0x%08x> (a %s)",
lock.getIdentityHashCode(),
lock.getClassName());
} else if (lock != null && t.getThreadState() == Thread.State.BLOCKED) {
writer.printf("%n - waiting to lock <0x%08x> (a %s)",
lock.getIdentityHashCode(),
lock.getClassName());
}
if (t.isSuspended()) {
writer.print(" (suspended)");
}
if (t.isInNative()) {
writer.print(" (running in native)");
}
writer.println();
if (t.getLockOwnerName() != null) {
writer.printf(" owned by %s id=%d%n", t.getLockOwnerName(), t.getLockOwnerId());
}
final StackTraceElement[] elements = t.getStackTrace();
final MonitorInfo[] monitors = t.getLockedMonitors();
for (int i = 0; i < elements.length; i++) {
final StackTraceElement element = elements[i];
writer.printf(" at %s%n", element);
for (int j = 1; j < monitors.length; j++) {
final MonitorInfo monitor = monitors[j];
if (monitor.getLockedStackDepth() == i) {
writer.printf(" - locked %s%n", monitor);
}
}
}
writer.println();
final LockInfo[] locks = t.getLockedSynchronizers();
if (locks.length > 0) {
writer.printf(" Locked synchronizers: count = %d%n", locks.length);
for (LockInfo l : locks) {
writer.printf(" - %s%n", l);
}
writer.println();
}
}
writer.println();
writer.flush();
}
public void generateWarningSuppression(PrintWriter pw) {
if (this.emitSuppressWarnings) {
pw.printf("@SuppressWarnings(\"unchecked\")\n ");
}
}
public void generateWarningSuppression(PrintWriter pw) {
if (this.emitSuppressWarnings) {
pw.printf("@SuppressWarnings(\"unchecked\")\n ");
}
}
private static PrintWriter printObject(final PrintWriter pw, final Object o) {
pw.printf("%[email protected]%08x", o.getClass().getName(), System.identityHashCode(o));
return pw;
}